Lennox Mini-Split Service Manual / Page 251
• Fan Speed is out of control (DC fan motor -
When outdoor fan speed is lower than 300 RPM
or higher than 24000 RPM for 60 seconds, the
whole unit stops and LED displays failure.
• Inverter module protection - Inverter module
protection itself has a protection function
against current, voltage and temperature, If
these protections happened, the corresponding
code will display on indoor unit LED and A/C will
stop. The unit will recover three minute delay
after the protection disappeared.
Low Voltage Protection
NOTE - If the low voltage protection occurs and not
resumes within 3 minutes, it will keep the protection
always after restart the machine.
VOLT_RST1_ADD
VOLTAGE
No limit
VOLT_LTM1_ADD
VOLT_RST2_ADD
VOLT_LTM2_ADD
VOLT_LTM_FREQ1_ADD
VOLT_LTM_FREQ2_ADD
Compressor Current Limit Protection
NOTE - If the low voltage protection occurs and not
resumes within 3 minutes, it will keep the protection
always after restart the machine.
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